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The parent-child unmanned air vehicle concept study
(Massachusetts Institute of Technology, 1999)
The Parent Child Unmanned Aerial Vehicle (PCUAV) concept was developed within the context of the MIT Draper Technology Development Partnership Project. A desire at Draper Laboratory to build a fixed wing surveillance ...
Aerodynamic response of turbomachinery blade rows to convecting density wakes
(Massachusetts Institute of Technology, 1998)
Density wakes have been recently identified as a possible new source for high cycle fatigue failure in the compressor blades of modern turbomachinery. In order to characterize the density wake induced force and moment ...
Identifying the impact of modeling and simulation in the generation of system level requirements
(Massachusetts Institute of Technology, 1999)
Requirements generation is an influential time in the evolution of the program. It allocates 70% of the life-cycle cost of a program and is responsible for a large percentage of the system errors and cost overruns. This ...
Cooperative parent child unmanned aerial vehicles : a systems engineering approach
(Massachusetts Institute of Technology, 1999)
The MIT/Draper Technology Development Partnership Project was initiated and sponsored by Charles Stark Draper Laboratory, Inc. (CSDL) to give students an opportunity to design, develop and validate a first-of-a-kind high ...
Design, manufacturing, and testing of an active twist rotor
(Massachusetts Institute of Technology, 1999)
An Active Twist Rotor (ATR) is developed for future implementation of the individual blade control for vibration and noise reduction in helicopters. The rotor blade is integrally twisted by direct strain actuation using ...
Design and analysis of penetrator probes for planetary science applications
(Massachusetts Institute of Technology, 2017)
Penetrator probes emplace by impact into a solid medium, carrying scientific instrumentation to fulfil specified post-impact mission objectives. They have been used successfully for multiple terrestrial applications, but ...
Development and assessment of a soot emissions model for aircraft gas turbine engines
(Massachusetts Institute of Technology, 2008)
Assessing candidate policies designed to address the impact of aviation on the environment requires a simplified method to estimate pollutant emissions for current and future aircraft gas turbine engines under different ...
Entry, descent and landing vehicle design space exploration for crewed Mars missions
(Massachusetts Institute of Technology, 2008)
With the announcement of the Vision for Space Exploration in 2004, NASA has been preparing plans for a crewed mission to Mars in the next few decades. One challenge associated with crewed missions to the Martian surface ...
A methodology for centrifugal compressor stability prediction
(Massachusetts Institute of Technology, 2009)
The stable operation of centrifugal compressors is limited by well-known phenomena, rotating stall and surge. Although the manifestation of the full scale instabilities is similar to the ones observed in axial machines, ...
Assessing low-fare entry in airline markets : impacts of revenue management and network flows
(Massachusetts Institute of Technology, 2004)
(cont.) the essential factors affecting traditional measures of airline performance following low-fare entry. Our simulation results show that these measures are greatly affected by the entrant's capacity relative to the ...